1 #include <petscviewer.h> 2 #include <petsc/private/matimpl.h> 3 4 PetscErrorCode MatView_Binary_BlockSizes(Mat mat, PetscViewer viewer) 5 { 6 FILE *info; 7 PetscMPIInt rank; 8 PetscInt rbs, cbs; 9 10 PetscFunctionBegin; 11 PetscCall(MatGetBlockSizes(mat, &rbs, &cbs)); 12 PetscCall(PetscViewerBinaryGetInfoPointer(viewer, &info)); 13 PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)viewer), &rank)); 14 if (rank == 0 && info) { 15 if (rbs != cbs) PetscCall(PetscFPrintf(PETSC_COMM_SELF, info, "-matload_block_size %" PetscInt_FMT ",%" PetscInt_FMT "\n", rbs, cbs)); 16 else PetscCall(PetscFPrintf(PETSC_COMM_SELF, info, "-matload_block_size %" PetscInt_FMT "\n", rbs)); 17 } 18 PetscFunctionReturn(0); 19 } 20 21 PetscErrorCode MatLoad_Binary_BlockSizes(Mat mat, PetscViewer viewer) 22 { 23 PetscInt rbs, cbs, bs[2], n = 2; 24 PetscBool set; 25 26 PetscFunctionBegin; 27 /* get current block sizes */ 28 PetscCall(MatGetBlockSizes(mat, &rbs, &cbs)); 29 bs[0] = rbs; 30 bs[1] = cbs; 31 /* get block sizes from the options database */ 32 PetscOptionsBegin(PetscObjectComm((PetscObject)viewer), NULL, "Options for loading matrix block size", "Mat"); 33 PetscCall(PetscOptionsIntArray("-matload_block_size", "Set the block size used to store the matrix", "MatLoad", bs, &n, &set)); 34 PetscOptionsEnd(); 35 if (!set) PetscFunctionReturn(0); 36 if (n == 1) bs[1] = bs[0]; /* to support -matload_block_size <bs> */ 37 /* set matrix block sizes */ 38 if (bs[0] > 0) rbs = bs[0]; 39 if (bs[1] > 0) cbs = bs[1]; 40 PetscCall(MatSetBlockSizes(mat, rbs, cbs)); 41 PetscFunctionReturn(0); 42 } 43